Also known as Lefebvre Blanche de Bruxelles
Commercial description
't Geheim van de Smit is brewed for the Netherlands market (mainly Amsterdam) by Lefebvre for Henk Smit BV which sells it under its own name.
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Lefebvre Blanche de Bruxelles

The brewer markets this same or near-same product by more than one names. This can be the result of a brewer distributing this beer under different names in different countries, or the brewer simply changing the name, but not the recipe at different points in time.